Science Advances

Supplementary Materials

This PDF file includes:

  • fig. S1. Standardized coefficients from two-stage least-squares regression model predicting pro-ISIS search rate normalized by Internet penetration in 2921 U.S. counties, 2014–2016.
  • fig. S2. Standardized coefficients from two-stage least-squares regression model predicting pro-ISIS Internet search rate normalized for overall search activity in 3146 U.S. counties, 2014–2016.
  • table S1. Results of Google Correlate searches to examine algorithmic confounding.
  • table S2. Individuals who were indicted for terrorist activity or completed an attack by state.
  • table S3. Individuals who were indicted for terrorist activity or completed an attack by year.

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